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Claude Opus 4.8 API pricing

Compare the published Claude Opus 4.8 (claude-opus-4-8) list rate with corouter's outlet rate, and estimate a monthly token bill. Claude Opus 4.8 matches the Opus 5 list rate and window, without the Opus 5.5 cache-read cut. Send claude-opus-4-8 to keep an Opus 4.8 client unchanged.

Anthropic
Claude Opus 4.8
Anthropic
−80%
Model ID
claude-opus-4-8
Context window
1M
Vendor
Anthropic
Modalities
ChatVisionReasoning
List pricecorouter
Input / Mtok$5.00$1.00
Cached input / Mtok$0.500$0.100
Output / Mtok$25.00$5.00

Prices in USD per million tokens, verified against official pricing pages on 2026-09-28.

Where this model fits

  • Opus 4.8 clients you do not want to rename
  • Reasoning at the same list rate as Opus 5
  • A controlled comparison against claude-opus-5-5

Estimates only. Actual billing depends on your real token counts, cache hit rate, and the prices in effect at request time.

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